Electrically-heated appliance.



A. J. BLOCK.

ELECTRICALLY HEATED APPLIANCE.

APPucATloN HLED AuG.22. 1912.

Patented June 8, 1915.

UNTTED STATES PATENT OFFICE.

ALBERT J. BLOCK, 0F CHICAGO, ILLINOIS. ASSIGNOB TO EL DORADO JONES, 0FCHICAGO, ILLINOIS.

ELECTRICALLY-HEATED APPLIANCE.

Application led August 22, 1912.

2"@ all whom it may concern:

Be it known that I, ALBERT J. Bacoli, a. citizen of. Great Britain, anda resident of Chicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Electrically-HeatedAppliances, of which the following is a specification.

This invention relates to electrically heated household implements, andhas for its object to provide simple and eicient structural formationand arrangement' of parts in an yelectrically heated household implementadapting the same for use as a sad or smoothing iron principally, andwhich is capable of ready utilization as a portable stove, a breadtoaster, etc., all as will hereinafter more fully appear.

In the accompanying drawings: Figure 1, is a side elevation illustratingthe general arrangement of the present appliance, with an ordinarysad-iron associated therewith. Fig. 2, is a sectional plan view of thesame, the sad-iron being removed. Fig. 3, is an inverted plan view ofthe electric heating unit, with parts broken away to illustrate theinternal construction. Fig. 4, is an enlarged longitudinal section online a Fig. 2. Fig. 5, is an enlarged fragmentary section of the heatingunit, il'lstrating the internal construction and 'terminal connectionsthereof.

Similar reference numerals indicate like parts in the several views.

Referring to the drawings, 1 represents the fiat base or shoe portion ofthe present appliance of any usual and ordinary configuration andprovided with a marginal upturned flange 2 which in the preferredconstruction as shown in Fig. 4, is formed with internal bearing ledges3, intermediate the height of 'said Harige, for the attachment andsupport of the electrical heat- 'ing unit hereinafter described, andwhich is disposed in the open top cavity formed by the flange 2,aforesaid.

The electrical heating unit of the present improvement 2comprises adetail formation and combination of parts, as follows.

4 is an upper carrying plate of a size corresponding with the bearingledges 3 above described, and adapted to rest thereon Specification ofLetters Patent.

Patented June 8, 1915.

serial No. 716,404.

and be attached thereto by screws-"5,.or other usual attaching means. j

6 are a plurality of knobs or protberances on the upper surface of theplate 4 aforesaid, adapted to support the body of the hereinafterdescribed sad-iron away from extended contact with said plate, and byproviding an intervening air space prevent the free passage of heat fromthe electrical heating unit to said main body of the sad-iron.

7 and 8 are companion sheets or layers of mica or like insulatingmaterial disposed on the underside of the aforesaid upper carrying plate4, and between which sheets or layers a conductor or. lead 9 of theelectrical heating element 10 is disposed.

11 is a sheet or` layer of mica or like insulating material disposedbeneath the aforesaid sheet or layer 8, and around which the electricalheating element 10, preferably in the form of a narrow band is woundspirally as illustrated in Fig. 3. One end of said element 10, isattached to the conductor or lead 9 above described, and the other endto a companion conductor or lead 12, as shown.

13 is a sheet or layer of mica or like insulating material disposedbeneath the aforesaid sheet or layer 11, and its spirally wound heatingelement 10, to insulate the same from the protecting shield or plate nowto be described.

14 is a plate or shield of metal disposed on the underside of the sheetor layer 13 above described.

The sheets 7, 8, 13 and plate 14 are made of smaller dimensions than theupper car.- rying plate 4, while the layer sheet 11 is made of stillsmaller dimensions, so that the edges of the spirally wound electricalheating element 10 will not be exposed at the sides, as illustrated'more particularly in Fig. -3. Y

15 are a plurality of rivets or like fastening means whereby the abovedescribed series of platesand sheets 4, 7, 8, 11, 13 and 14, arepermanently secured together as a single heating unit, which whendisposed in place '1n the open top cavity of the shoe or base 1 is freefrom mechanical contactl with any part of said shoe or base exceptthrough the before described. connection :ofl

the carrying plate 4 to said shoe or'ibase.

l'is an integrally formed angular bracket at one end of the carryingplate 4 and extending vertically therefrom, with its upper portionformed into a holding sleeve 17, for receiving the end of theusualiexible conductor 18 by which the appliance is connected to anordinaryfixture or wall socket.- In addition to its function ofhousingthe end of the flexible conductor 18, the said bracket is adaptedfor 'use asa foot or rest to=support the device on its end durfingiperiodsy of temporary non-use.

The electrical ,Wires or leads contamedin the above mentioned flexibleconductor 18,

are' connected to,i the 'conductor-sbr leads 9 proper assembled relationand so thatthe combined devices may be handled as a single appliance bythe handle of thesad-iron, in

ordinary ironing or smoothingoperation; if 21 are a series of lateralorificesformed',r

in the marginal flange 2vof-thef` baseorshoe ed .for engagementWith'prongsoii -the-'upper sired 'to supportthepifesen't ap liance inaninverted@condition. fromfv that own in Fig.

4, of the drawing,.andfin a raised position above the top of a,l tableor stand, with avievv to utilize the'applian'ce as a bread,.t0astr, orin a kindred use. Saidoriice's- Zl are also adapted toreceive*similarprongsor'a' handle or bail, whenithe appliance ls'tlSedindependent of the ordinary sad-iron above combinationof abase memberformed TWitl'l an' `upwardly extendinggmarg'mal fiange,

alectricaljheating -element disposed in the lower portion of thecavity-formed by said flange, an engaging means carried by', said asemember, l.and xi/manipulating handle adaptedforldetachablecngagementwith the aforesaid engaginggfmeans of; thebe"meuf ber, substantially as set'forth. .2; An 'electricallyheatedappliance, comprising a'flat lshoehavng an-uptunied 'mar- Said elasticbailis adapted to ginalfiange forming an open top cavity, an

, electrical heating unit detachably secured in said cavity, and anelastic bail secured to said shoe midway the length thereof and adaptedfor holding engagement with the body portion of a sad-iron,substantially as set forth.

3. An electrically heated appliance, comprising a flat shoe having anupturned marginal flange forming an open top cavity,

and an electrical heating unit detachably secured in said cavityandhaving a'fiat top member formedwith a plurality of pro' tuberances onits upper surface, substa'n-` tially as set forth. Y

4. An electricallyheated appliance, comprising a flat shoe having an`upturned marginal flange forming an open to cavity, and an electricalheating unit detac ably secured in said cavity and having an integrallyformed and `angularly disposed bracket at one end, substantially as setforth.

5. An electrically heated appliance, com prising a flat shoe having anupturned-marginal flange forming an open top cavity, andanelectrical-heating unit detachably secured in said cavity, the samecomprising an upper carrying plate of metal, a lower protecting plate ofmetal, a series'of -intrf mediate sheets of insulatingmaterih 'and anelectrical heating element disposed-beals ginal flange formingan openltop cavity,

vico' and an' electrical heating unit fdetachably.`

Asecured .in said cavity, the saine comprising anV uppercarrying plateof metal, 'a lower protecting plate of metal, a seriesof inter- ,mediatesheets of insulating 'm'a't'eijial,' land `an electrical heating,element 'disposed between said sheets, thev 'bottom .plat-llhddimensions than the uppersubstantially as'set forth.,

7. Anlelectrically heated applianicificoming ledge`.in the cavityformedibyaid fseries of intermediate sheets being ofv smaller Ajing-Plata? Vflange, saidheating unit comprising an up-l percarryiliglplate of Imetal, .a lower pro-s.

plate` of metal, la' series of. nterfmediate sheetsvof:insulatinggmaterial and an l electric .heating element J dispssedsaidfsfietasubstantially as forth.. 8. An electricallyheated appliance,een

prisinga-iat-.shoe hav-ing .an upturned mar-- ginal flange with internalbearing ledges intermediate -its -height, .;andpan elec`` las aanheating mae SupOriedeSnd bearfing.v .ledges inl` the cavity ,-Jformedfby said Iflan ge, .-sai'd heating unit comprising an upcarryingplate ofmetal, a lower pra- Per tecting plate of metal, a series of inter-Signed at Chicago, Illinois this 17th day medlite sheets1 of insulatingmaterial and of August 1912.

an e ectrical eating element disposed between said sheets, the lowerplate and series ALBERT J' BLOCK' of intermediate sheets being ofsmaller Witnesses :V

dimensions than the upper carrying plate, ROBERT BURNS, substantially asset f orth. M. H. HOLMES.

